This book is the compendium of all the material that the great teacher B.K.S. Iyengar published about yoga as an effective and valuable discipline to maintain or regain health. Masterfully, the text adapts the postures to the various levels of practitioners, explaining techniques for entering, staying and leaving each posture, as well as the use of supports that make their practice more effective. This compilation, supervised by B.K.S. Iyengar (with the collaboration of his daughter Geeta Iyengar), is the best complement to Luz sobre el Yoga, and constitutes a treasure for the practitioners of the Iyengar method.